Marketplace · API · x402

keywords.duoleads.com/v1/backlinks-history

Monthly history of a domain's backlink profile: rank (0-1000), backlinks, new and lost backlinks, referring domains, new and lost referring domains and main domains per month, for up to 24 months (from 2019 on; default the last 24 months) per $0.048 call, from a web link index. Use when tracking link growth or a lost-link drop over time. No history is an empty answer, which is still charged. Bad input is a free 400; a data source failure is not charged.

Use it

Call it (an x402 client pays automatically)

curl -i https://keywords.duoleads.com/v1/backlinks-history
# 402 reply -> sign PAYMENT-REQUIRED with an x402 client (e.g. @x402/fetch) -> retry with PAYMENT-SIGNATURE

This listing as JSON

curl https://aipaygen.com/v1/catalog/api/x402-2ca26b1e9802300b

Search the whole marketplace from your agent (MCP)

{
  "mcpServers": {
    "aipaygen": {
      "url": "https://aipaygen.com/mcp"
    }
  }
}